cutting of contest. ketosis?

Hey I'm about to start cutting for a contest in April. Should I do a calorie deficit diet or ketosis diet, or a combination of both ex. Calorie deficit for majority and then ketosis towards contest? Oh and also I want to be at a really low low bf like 2-3%

Hey I'm about to start cutting for a contest in April. Should I do a calorie deficit diet or ketosis diet, or a combination of both ex. Calorie deficit for majority and then ketosis towards contest? Oh and also I want to be at a really low low bf like 2-3%